expansion tank (10) for receiving volume changes caused by temperature fluctuations in service and heating water systems (28, 29), comprising a tank (11, 11a) divided by a diaphragm (16, 22) into a pressurized gas compartment (19, 24) and a water compartment (18, 23). water compartment (18, 23) communicates through ports (14, 27) with a water system (28, 29). service water compartment (18) and heating water compartment (23) are integrated in a common tank (11, 11a).
|
1. An expansion tank (10) for receiving volume changes caused by temperature fluctuations in service and heating water systems, comprising a heating water expansion vessel (21) divided by a diaphragm (22) into a pressurized gas compartment (24) and a heating water compartment (23), said heating water compartment (23) communicating through ports with a heating water system, and a service water expansion vessel (15) divided by a diaphragm (16) into a pressurized gas compartment (19) and a service water compartment (18), said service water compartment (18) communicating with a service water system, wherein said service water expansion vessel and said heating water expansion vessel (21) are integrated in a common structure forming said expansion tank (10).
2. expansion tank as in
3. expansion tank as in
4. expansion tank as in
5. expansion tank as in
6. expansion tank as in
7. expansion tank as in
8. expansion tank as in
9. expansion tank as in
10. expansion tank as in
11. expansion tank as in
12. expansion tank as in
|
The invention relates to an expansion tank for receiving volume changes caused by temperature fluctuations in service and heating water systems, comprising a vessel divided by means of a diaphragm into a pressurized gas space and a water space, the water space having ports for connection to a water system.
In both service water systems and heating water systems, temperature variations may cause the liquid medium--usually water--to undergo volume fluctuations. Such temperature dependent volume fluctuations are compensated for by expansion tanks of the type known by DE 4013897 C2, for example. These expansion tanks are placed under a predetermined pressure to urge incoming water back into the respective systems as temperatures change.
Conventional service water systems are pressurized to approximately 4 bar, whereas heating systems conventionally operate at a pressure of 1.5 to 3 bar. The expansion tanks are necessary for technical reasons, but occupy a certain amount of space and cause additional material expenditures.
It is an object of the present invention to provide an expansion tank of the type specified above which reduces the space requirements for the water systems involved, as well as the material expenditures incurred.
The above object is achieved by a service water space or compartment and a heating water space or compartment integrated in a common tank. As a further development, the service water space is provided in a service water expansion vessel and the heating water space in a heating water expansion vessel, the service water expansion vessel being separated from the heating water expansion vessel by a partition.
These measures result in an expansion tank suited to receive expansion water from two different water systems. The amounts of water received at any one time may differ, as can the pressures in the respective systems. This renders one of the vessels unnecessary since the remaining one will serve two water systems. As a result, installation labour and expenditures will be reduced substantially.
Additional advantageous measures are described in the dependent claims. The invention is shown in the attached drawing and is described in greater detail hereinafter.
FIG. 1, is a schematic drawing showing the expansion tank of the present invention.
______________________________________ |
10 Expansion tank |
11 Top portion of the tank |
11a Bottom portion of the tank |
12 Tank port opening |
12a opening edge |
13 Lid |
13a Lid threaded fastener |
14 Service water port |
15 Service water expansion vessel |
16 Diaphragm |
16a Diaphragm bead |
17, 17a Supply valve |
18 Service water compartment |
19 Pressurized gas compartment |
20 Partition |
21 Heating water expansion vessel |
22 Diaphragm |
22a Diaphragm bead |
23 Heating water compartment |
24 Pressurized gas compartment |
25 Vessel dividing plane |
26 Clamping ring |
27 Heating water port |
28 Service water system |
29 Heating system |
30 Foot |
______________________________________ |
As shown schematically in the single drawing figure, a partition 20 divides expansion tank 10 to contain a service water vessel 15 and a heating water vessel 21. Expansion tank 10 preferably consists of sheet steel and has partition 20--also preferably of sheet steel--welded in place therein. Suitable plastics material may be used as well and joined by adhesive bonding.
Expansion tank 10 comprises a vessel top portion 11 and a vessel bottom portion 11a, which are separated at a division 25. Top portion 11 has therethrough an opening 12 designed to form a manhole; it may serve as an inspection opening as well. Opening 12 is adapted to be closed by means of a lid 13. Lid 13 is an embossed member and releasably secured around the edge 12a of opening 12 by means of threaded fasteners 13a.
Opening 12 has a diaphragm 16 inserted therein. Diaphragm 16 preferably is an inflatable bubble type diaphragm and has a diaphragm bead 16a. Bead 16a engages edge 12a of opening 12 where it serves as a seal for lid 13 also.
Diaphragm 16 divides service water vessel 15 into a service water compartment 18 and a pressurized gas compartment 19. Compartment 19 can be pressurized through supply valve 17 with a gas to a pressure level of approximately 10 bar. Service water vessel 15 communicates through a service water port 14 with a service water system (not shown in detail). Service water compartment 19 is defined by diaphragm 16 so that the water will not contact the walls of top portion 11.
A second diaphragm--preferably a pot type diaphragm in the embodiment here described--is inserted at division 25 between top portion 11 and bottom portion 11a of the vessel. Diaphragm 22 has a bead 22a which also serves as a seal between top portion 11 and bottom portion 11a.
Top portion 11 and bottom portion 11a are joined by means of a clamping ring 26. Clamping ring 26 is arranged to be releasable by using closure means not shown in greater detail herein.
Diaphragm 22 divides heating water expansion vessel 21 in bottom portion 11a into a pressurized gas compartment 24 and a heating water compartment 23. Compartment 24 may be filled with a pressurized gas through a second supply valve 17a. Heating water compartment 23 communicates through a heating water port 27 with a heating system 29 (not shown in detail). The heating water from heating system 29 contacts the inner walls of bottom portion 11a of the vessel, while the pressurized gas is in the pressurized gas compartment 24 partly defined by diaphragm 22.
Expansion vessel 10 may be set up on feet 30 at a location suited and intended therefor (not shown in detail) inside a building.
Patent | Priority | Assignee | Title |
10018308, | Aug 08 2006 | Wessels Company | Expansion tank with a predictive sensor |
10955079, | Mar 01 2018 | BLACOH FLUID CONTROLS, INC | Industrial flow and pressure stabilizer system |
10955144, | Dec 28 2016 | JOONG ANG ENGINEERING CO , LTD | Variable air pressure regulation device for expansion tank |
11346374, | Sep 08 2020 | BLACOH FLUID CONTROLS, INC | Fluid pulsation dampeners |
11549523, | Apr 27 2021 | BLACOH FLUID CONTROLS, INC | Automatic fluid pump inlet stabilizers and vacuum regulators |
11828303, | Apr 27 2021 | BLACOH FLUID CONTROLS, INC. | Automatic fluid pump inlet stabilizers and vacuum regulators |
6401966, | May 23 2000 | Plastic pressure vessel structure | |
6418969, | Nov 08 2000 | WATTS WATER TECHNOLOGIES, INC | In-line thermal expansion tank |
7108015, | Jul 25 2002 | Flexcon Industries | In-line flow through diaphragm tank |
7775260, | Aug 08 2006 | Expansion tank with alarm system | |
8348085, | Oct 07 2008 | Pressure tank | |
8403170, | Apr 20 2012 | Pressure vessel | |
8439080, | Sep 24 2008 | HITACHI ENERGY LTD | Pressure compensator |
8523001, | Dec 07 2009 | Advanced Conservation Technology Distribution, Inc.; ADVANCED CONSERVATION TECHNOLOGY DISTRIBUTION INC | Thermal expansion/surge reduction water tank |
8549924, | Sep 24 2008 | HITACHI ENERGY LTD | Pressure compensator |
8651315, | Oct 28 2008 | Pressure tank | |
9080725, | Sep 19 2013 | PA.E Machinery Industrial Co., Ltd. | Pressure vessel |
9255663, | Oct 28 2008 | Pressure tank | |
9261291, | Jun 12 2008 | QUOOKER INTERNATIONAL B V | Hot water heater and method of supplying hot water |
9751689, | Sep 24 2013 | Pentair Residential Filtration, LLC | Pressure vessel system and method |
ER1357, | |||
ER2839, |
Patent | Priority | Assignee | Title |
1690072, | |||
2342355, | |||
2638932, | |||
2695753, | |||
3035614, | |||
3076479, | |||
3077208, | |||
3080119, | |||
3137317, | |||
3139113, | |||
3174658, | |||
3230976, | |||
3783905, | |||
3802464, | |||
3807901, | |||
4013221, | Apr 17 1974 | Pressure balancing device for heating systems | |
4129025, | Feb 25 1977 | Textron Inc. | Method of fabricating an expulsion tank diaphragm |
4305428, | Dec 31 1979 | Hydril Company | Surge absorber |
4474215, | May 19 1983 | AOS Holding Company | Pressure vessel with improved diaphragm mounting |
4595037, | Dec 14 1984 | ESSEF Industries, Inc. | Split tank closure and diaphragm assembly |
4784181, | Oct 07 1985 | Flamco B.V. | Expansion tank with a bladder-type diaphragm |
5368073, | Oct 07 1993 | FLECK CONTROLS, LLC | Hydropneumatic pressure vessel having an improved diaphragm assembly |
DE4013897A1, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Aug 21 1998 | BOEHME, MATHIAS | OTTO HEAT HEIZUNGS-ENERGIE UND ANLAGENTECHNIK GMBH | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009468 | /0105 |
Date | Maintenance Fee Events |
Oct 15 2003 | REM: Maintenance Fee Reminder Mailed. |
Mar 29 2004 | EXP: Patent Expired for Failure to Pay Maintenance Fees. |
Date | Maintenance Schedule |
Mar 28 2003 | 4 years fee payment window open |
Sep 28 2003 | 6 months grace period start (w surcharge) |
Mar 28 2004 | patent expiry (for year 4) |
Mar 28 2006 | 2 years to revive unintentionally abandoned end. (for year 4) |
Mar 28 2007 | 8 years fee payment window open |
Sep 28 2007 | 6 months grace period start (w surcharge) |
Mar 28 2008 | patent expiry (for year 8) |
Mar 28 2010 | 2 years to revive unintentionally abandoned end. (for year 8) |
Mar 28 2011 | 12 years fee payment window open |
Sep 28 2011 | 6 months grace period start (w surcharge) |
Mar 28 2012 | patent expiry (for year 12) |
Mar 28 2014 | 2 years to revive unintentionally abandoned end. (for year 12) |